Fix #854 Added ViewChannel enum and property to channel permissions

src/Discord.Net.Core/Entities/Permissions/ChannelPermission.cs

@@ -11,7 +11,9 @@ namespace Discord
 
         // Text
         AddReactions        = 0x00_00_00_40,
-        ReadMessages        = 0x00_00_04_00,
+        [Obsolete("Use ViewChannel instead.")]
+        ReadMessages        = ViewChannel,
+        ViewChannel         = 0x00_00_04_00,
         SendMessages        = 0x00_00_08_00,
         SendTTSMessages     = 0x00_00_10_00,
         ManageMessages      = 0x00_00_20_00,

src/Discord.Net.Core/Entities/Permissions/ChannelPermissions.cs

@@ -41,7 +41,11 @@ namespace Discord
         /// <summary> If true, a user may add reactions. </summary>
         public bool AddReactions => Permissions.GetValue(RawValue, ChannelPermission.AddReactions);
         /// <summary> If True, a user may join channels. </summary>
-        public bool ReadMessages => Permissions.GetValue(RawValue, ChannelPermission.ReadMessages);
+        [Obsolete("Use ViewChannel instead.")]
+        public bool ReadMessages => ViewChannel;
+        /// <summary> If True, a user may view channels. </summary>
+        public bool ViewChannel => Permissions.GetValue(RawValue, ChannelPermission.ReadMessages);
+
         /// <summary> If True, a user may send messages. </summary>
         public bool SendMessages => Permissions.GetValue(RawValue, ChannelPermission.SendMessages);
         /// <summary> If True, a user may send text-to-speech messages. </summary>